CVE-2023-20128
Published: 05 April 2023
Summary
CVE-2023-20128 is a high-severity Improper Neutralization of Expression/Command Delimiters (CWE-146) vulnerability in Cisco Rv320 Firmware. Its CVSS base score is 7.2 (High).
Operationally, ranked in the top 12.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Multiple vulnerabilities affect the web-based management interface of Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers. These issues stem from insufficient validation of user-supplied input and could permit command injection on the underlying Linux operating system, with a CVSS score of 7.2 under CWE-78 and CWE-146.
An authenticated remote attacker possessing valid Administrator credentials could send crafted input to an affected device and execute arbitrary commands as the root user, achieving full control over the device operating system. No unauthenticated exploitation path is described.
The referenced Cisco Security Advisory states that no software updates have been released to address the vulnerabilities and provides no additional mitigation steps beyond restricting administrative access.
EPSS for this CVE rose from low values to a peak of 0.1712 before receding to the current 0.0325, indicating a period of increased exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-24307
Vulnerability details
Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers could allow an authenticated, remote attacker to inject and execute arbitrary commands on the underlying operating system of an affected device.…
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These vulnerabilities are due to insufficient validation of user-supplied input. An attacker could exploit these vulnerabilities by sending malicious input to an affected device. A successful exploit could allow the attacker to execute arbitrary commands as the root user on the underlying Linux operating system of the affected device. To exploit these vulnerabilities, an attacker would need to have valid Administrator credentials on the affected device. Cisco has not released software updates to address these vulnerabilities.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.